Means for operating gas-producers.



` H.. E. LGNGWELL. MENS FOR OPERATING GAS PRODUCERS. APPLICATION FILED DBOLZS, 1909.

, Patented Aug. 19, 1913.

2 SHEETS-SHEET 2.

Beait lmown that I, HENnrE. LoNGwELL a citizen ofthe United States, and a, res` i. dent 'of Pittsburgh, in the countyV of Alle- .g '.gheny and State of Pennsylvania, have made BEST Ammers COPY i' UTED' STATES 'PATENT OFFICE;

HENRY E.' LONGWELL, oF Pir'rsBURGn, rENNsYLvANIA, AssiGNoR, BYMESNE- AssIGNMENTs, "ro THE COLONIAL TRU g SYLVANlLuA CORIGRATIQN BEN'NSYLVANIA.

MEANS non 'OPERATING' .GAS-Propuestas'.

-Speci-eatioii of Letters Patent.

Application tiled Decemheri, 1909. erel'No. 534,615.`

`a newand useful Invention in Means for Operating Gas-'Producers,.of which the folv lowing is a specification.

'.Ilhis invention relates-.to -the general vclass of suction gas produeergplants, .but moreespecially :to the means of .controlling and regulating Athe amount of gas made, 'in :ac-

cordancewith thedemand .on the producer. 'f p Difficulty has heretofore been experienced in the regulation .and A control of .pressure of the Vgasl due to the -luctuations of the load 'of the source ofconsumption, and to var iations in the condition .ofthe fuel bed in the'V -lnletof an-exhauster, which discharges i, 't'o l producer.l 'and consequent variations in the resistance itoifers to the passage of air 'and gas through it.. .,If, the demand. for gas 1s increased the pressure wil1 decrease. Also if the fuel 'in the producer should'settle down into an'unusually compact mass, the

pressure will decrease even though the ile-` f backto. the mixer.

mand for gas should not increase.`

I It -is most desirable that a gasv enginel should be supplied with gas at a eonstantl pressure, as with variations in the pressure .the proportions of gas and air admitted to delivered at a pressure above that of thcatmosphere, a condition that does not obtain .inthe-ordinary suction gas producer plant,

andit is essential that this pressure shall lautomatically be maintained constant irrespective of the demandfor gas up to the capacity of the plant, as otherwise the proportions of'gas and 'air supplied to the burners may v ary tosucli an extent as to give veryl ineiiicient combustion, or even result in a mixture that :will not support combustion at all. i

In gas producers in which 'fuels containing-a considerable proportion of so called wel as. The objectof my invention isft effect a volatile combustible, or hydrocarbon', are

sT coMPANr, TRUsTEnoF PITTSBURGH;

Patented Aug. 19, .1 91s.-A

used, 'the quality of the gas -is apt' to vary from .time to time. liable -to be richer'than the vaverage*for .a 'lfew moments --after after poking. lConsequently it is desirable For example thev ga'js is i charging fresh fuel, or v6o to .equalize these irregularities in' quality as y irregularities in .pressurefl ,suitable'and satisfactory control and regula'f tion ofthe pressure of the gas delivered byl asuction gas producen-sand to provide means whereby .the variationsdn the quality of gasdelivered to the source of cons`1unp``j tion will be sensibly reduced. -T ac'cfoihplish this .object proposet'o place in 'the .gas line from the producera mixing chamber, lto connect the mixing chamberto the the gas vfli'ne leading to the source .of consum filon."l

eralxlygreater .than 'the'maximuin normal demand-for gas. ltrom the dischargedine* from -the exhauster AI Acarr In thls by-pass line I place .a valve controlled by a pressure reguatorconnected to the gas line leading to the sourceV of supply in such a manner that any tendencyto a variation -in thepressure' will allow more or less gas to be by-passed to the mixer. The constant by-passing of a portion of the gas coming from the exhauster, makes an intimate mixture with the fresh gas entering the mixer from the producer, and in this Way tends to average' the quality.

In 'the drawings Figure 1 is. a longitu-.

the producer plant in.

Adinal elevation of accordance with my invention. plan ofthe producer plant.

Referring to the drawings showing one embodiment of my invention, A `is a suetion gas producer of -al standard design with its charging opening at 1, the steamand air. opening at 2, and the gas outlet at 3. The gas'outlet may 'consist ofa large v er- Fig. 2 is* a .tical pipe,4 Whose end may be' submerged in a pit, through which Vthe waste water' fromthe .scrubber G passes, carrying off the heavier impurities of the gas. A- branch 5 from the'vertical pipe 3 leads to the bottom of the scrubber, .which may be of any suitable designand construction. The gas passes up thr'oughthe scrubber 6 into the 7e T; eidisplacement ofjthe exhausterispref 1 

